Ultrasonic cleaner



FIG. 1 is a front, top and right side perspective view of an ultrasonic cleaner showing our new design;

FIG. 2 is a front elevational view of FIG. 1;

FIG. 3 is a rear elevational view of FIG. 1;

FIG. 4 is a left side elevational view of FIG. 1;

FIG. 5 is a right side elevational view of FIG. 1;

FIG. 6 is a top plan view of FIG. 1; and,

FIG. 7 is a bottom plan view of FIG. 1.

The broken lines depict portions of the ultrasonic cleaner that form no part of the claimed design. 

CLAIM The ornamental design for an “ultrasonic cleaner”, as shown and described. 